src/cocoa/sound.mm

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        sound.cpp
   3 // Purpose:     wxSound class implementation: optional
   4 // Author:      Ryan Norton
   5 // Modified by:
   6 // Created:     2004-10-02
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Ryan Norton
   9 // Licence:       wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifdef __GNUG__
  13 #pragma implementation "sound.h"
  14 #endif
  15
  16 #include "wx/object.h"
  17 #include "wx/string.h"
  18 #include "wx/sound.h"
  19
  20 #if wxUSE_SOUND
  21
  22 #include "wx/app.h"
  23 #include "wx/cocoa/autorelease.h"
  24 #include "wx/cocoa/string.h"
  25
  26 #import <AppKit/AppKit.h>
  27
  28 //
  29 // NB:  Vaclav's new wxSound API is really tricky -
  30 // Basically, we need to make sure that if the wxSound
  31 // object is still in scope we don't release it's NSSound
  32 //
  33
  34 WX_NSSound lastSound=NULL;
  35 bool isLastSoundLooping = NO;
  36 bool isLastSoundInScope = NO;
  37
  38 // ========================================================================
  39 // wxNSSoundDelegate
  40 // ========================================================================
  41 @interface wxNSSoundDelegate : NSObject
  42 {
  43 }
  44
  45 // Delegate methods
  46 - (void)sound:(NSSound *)theSound didFinishPlaying:(BOOL)bOK;
  47 @end // interface wxNSSoundDelegate : NSObject
  48
  49 @implementation wxNSSoundDelegate : NSObject
  50
  51 - (void)sound:(NSSound *)theSound didFinishPlaying:(BOOL)bOK
  52 {
  53     if (bOK && isLastSoundLooping)
  54         [lastSound play];
  55     else if (isLastSoundInScope = NO)
  56     {
  57         [lastSound release];
  58         [self release];
  59     }
  60 }
  61
  62 @end // wxNSSoundDelegate
  63
  64 // ------------------------------------------------------------------
  65 //          wxSound
  66 // ------------------------------------------------------------------
  67
  68 wxSound::wxSound()
  69 : m_hSnd(NULL), m_waveLength(0)
  70 {
  71 }
  72
  73 wxSound::wxSound(const wxString& sFileName, bool isResource)
  74 : m_hSnd(NULL), m_waveLength(0)
  75 {
  76     Create(sFileName, isResource);
  77 }
  78
  79 wxSound::wxSound(int size, const wxByte* data)
  80 : m_hSnd(NULL), m_waveLength(size)
  81 {
  82     NSData* theData = [[NSData alloc] dataWithBytesNoCopy:(void*)data length:size];
  83     m_hSnd = [[NSSound alloc] initWithData:theData];
  84
  85     m_cocoaSoundDelegate = [[wxNSSoundDelegate alloc] init];
  86 }
  87
  88 wxSound::~wxSound()
  89 {
  90     if (m_hSnd != lastSound)
  91     {
  92         [m_hSnd release];
  93         [m_cocoaSoundDelegate release];
  94     }
  95     else
  96         isLastSoundInScope = NO;
  97 }
  98
  99 bool wxSound::Create(const wxString& fileName, bool isResource)
 100 {
 101     wxAutoNSAutoreleasePool thePool;
 102
 103     Stop();
 104
 105     if (isResource)
 106     {
 107             //oftype could be @"snd" @"wav" or @"aiff", nil or @"" autodetects (?)
 108         m_hSnd = [[NSSound alloc] initWithContentsOfFile:
 109             [[NSBundle mainBundle] pathForResource:wxNSStringWithWxString(fileName) ofType:nil]
 110             byReference:NO];
 111     }
 112     else
 113             m_hSnd = [[NSSound alloc] initWithContentsOfFile:wxNSStringWithWxString(fileName) byReference:YES];
 114
 115     m_cocoaSoundDelegate = [[wxNSSoundDelegate alloc] init];
 116
 117     m_sndname = fileName;
 118     return m_hSnd != nil;
 119 }
 120
 121 bool wxSound::DoPlay(unsigned flags) const
 122 {
 123     wxASSERT_MSG(!( (flags & wxSOUND_SYNC) && (flags & wxSOUND_LOOP)),
 124                 wxT("Invalid flag combination passed to wxSound::Play"));
 125
 126     Stop();
 127
 128     if (flags & wxSOUND_ASYNC)
 129     {
 130         lastSound = m_hSnd;
 131         isLastSoundLooping = (flags & wxSOUND_LOOP) == wxSOUND_LOOP;
 132         isLastSoundInScope = YES;
 133        [m_hSnd setDelegate:m_cocoaSoundDelegate];
 134         return [m_hSnd play];
 135     }
 136     else
 137     {
 138         [m_hSnd setDelegate:nil];
 139
 140            //play until done
 141         bool bOK = [m_hSnd play];
 142
 143         while ([m_hSnd isPlaying])
 144         {
 145             wxTheApp->Yield(false);
 146         }
 147         return bOK;
 148     }
 149 }
 150
 151 bool wxSound::IsPlaying()
 152 {
 153     return [lastSound isPlaying];
 154 }
 155
 156 void wxSound::Stop()
 157 {
 158     if (isLastSoundInScope)
 159     {
 160         isLastSoundInScope = NO;
 161
 162         //remember that even though we're
 163         //programatically stopping it, the
 164         //delegate will still be called -
 165         //so it will free the memory here
 166         [((NSSound*&)lastSound) stop];
 167     }
 168
 169     lastSound = nil;
 170 }
 171
 172 #endif //wxUSE_SOUND